Paper bag or envelope



Patented Oct. 4, 1927.

WILLIAM GIBSON THOMLINSON, OF GLASGOW, SCOTLAND.

PAPER BAG OR ENVELOPE.

Application filed February 5, 1926, Serial No.

This invention relates to a paper bag or envelope, hereinafter for brevity referred to as an envelope.

It is already known to provide a paper.

envelope with closing means comprising a flap secured to the interior face of one side so as to form a pocket and a flap attached to the opposite side, the first flap being so dimensioned as to'project a distance less than the second flap which is folded over the free edge of the first flap, both flaps being then folded over together once or more and inserted in the pocket.

In accordance with the present invention for the first named flap there is substituted a collar secured to the interior of the envelope all around the mouth thereof, the arrangement being such that when the envelope is closed the contents are retained dust-tight.

1n the accompanying drawing, Fig. 1 is a plan of a paper envelope according to the invention, Fig. 2 is a fragmentary perspective view thereof and Fig. 3 a fragmentary vertical section drawn to a large scale; Figs. 4 and 5, respectively, are a plan and a section drawn to a large scale of a modification.

As shown in the drawings, the envelope has two sides land 2 of which the side 2 is formed with the flap 3. Secured to the interior face of each of the sides 1 and 2 is a collar at forming a pocket 5 between the collar and the side 1. The collar is preferably so dimensioned as to project from the envelope a less distance than the flap 3.

Preferably corners of the flap 3 and of the collar 4 are first folded over. Then the flap 3 is folded over the free edge of the 40 collar 4. Then the flap 3 and collar 4 are folded over together and inserted in the pocket 5 as seen in Fig. 3.

86,337, and in Great Britain July 18, 1325.

The collar may be creased or marked to facilitate folding. Further facility in closing may be obtained by the provision of diagonal creases at the corners.

In the form shown in Figs. 4 and 5, the side 1 of the bag has an extension 6 at the mouth to carry stamps or receive letterpress or the like; otherwise the construction is similar to that shown 1n Figs. 1 to 3. The extension 6 is left unfolded when the other parts are turned into close the mouth of the bag.

I claim That improvement in the manufacture and sealing of paper envelope which consists in providing an envelope having a tubular insert in the form of a collar having its inner terminal secured to inner surfaces of the envelope body inwardly of the mouth of the envelope and its outer terminal projecting beyond said mouth, there being a pocket re- I served between an intermediate portion of the collar and the opposing portion of the envelope and a flap extended from one side I of the mouth of the envelope and projecting beyond the Outer terminal of the collar, said flap being foldable upon itself to close the outer terminal of the collar and to confine the projecting portion of the collar between the folded portions of the flap, said folded portions of the flap together with the intervening portion of the collar being further foldable for insertion in said pocket whereby the mouth portion of the envelope is sealed by the folding portion and by the incidental pressing together of opposite wall portions of the collar.

In testimony whereofI have signed my name to this specification.

WILLIAM GIBSON THOMLINSON. 

